Abstract

Possible advantages of the architectural restoration of the hip joint after total hip arthroplasty (THA) are numerous. The relationship between the femoral offset (FO) and the abductor moment arm and the polyethylene wear, loosening, instability, persistent limp due to gluteus medius insufficiency, even dislocation, leg length discrepancy have been reported (1-4). Architectural and mechanical hip restoration has to be technically easy, reproducible and transmissible. Controversies continue: standard implants or implants with specific offset, variety of series or modular device. We study the influence of using a standard stem series with a progressive unique offset on the hip geometry.

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